Min max recording specifications, Electrical characteristics of the terminals, Frequency counter sensitivity and trigger levels – Atec Fluke-87V User Manual
Page 3: Frequency counter specifications
Fluke 83V and 87V detailed specifications Fluke Corporation 3
MIN MAX recording specifications
Model
Nominal Response
Accuracy
83V
100 ms to 80 %
Specified accuracy ± 12 counts for changes > 200 ms in duration
(± 40 counts in ac with beeper on)
87V
100 ms to 80 %
Specified accuracy ± 12 counts for changes > 200 ms in duration
(dc functions)
> 25 % of range
120 ms to 80 %
Specified accuracy ± 40 counts for changes > 350 ms and inputs
(ac functions)
250 µs (peak)
Specified accuracy ± 100 counts for changes > 250 µs in duration
(Model 87 only)
1
(add ± 100 counts for readings over 6000 counts)
(add ± 100 counts for readings in Low Pass mode)
1
For repetitive peaks: 1 ms for single events.
Electrical characteristics of the terminals
Function
Overload
Input Impedance
Common Mode Rejection Ratio
Protection
1
(nominal)
(1 k
Ω unbalance)
Normal Mode Rejection
1000 V rms
10 M
ΩΩ < 100 pF
> 120 dB at dc, 50 Hz or 60 Hz
> 60 dB at 50 Hz or 60 Hz
1000 V rms
10 M
ΩΩ < 100 pF
>120 dB at dc, 50 Hz or 60 Hz
> 60 dB at 50 Hz or 60 Hz
1000 V rms
10 M
ΩΩ < 100 pF
> 60 dB, dc to 60 Hz
(ac-coupled)
Open Circuit
Full Scale Voltage
Typical Short Circuit Current
Test Voltage
To 6.0 M
Ω
50 M
Ω or 60 nS 600 Ω
6 k
60 k
600 k
6 M
Ω 50 MΩ
1000 V rms
< 7.3 V dc
< 4.1 V dc
< 4.5 V dc
1 mA
100 µA 10 µA
1µA
1 µA
0.5 µA
1000 V rms
< 3.9 V dc
3.000 V dc
0.6 mA typical
1
10
6
V Hz maximum
Frequency counter sensitivity and trigger levels
Minimum Sensitivity (RMS Sine wave)
Approximate Trigger Level
Input Range
1
5 Hz - 20 kHz
0.5 Hz - 200 kHz
(DC Voltage Function)
600 mV dc
70 mV (to 400 Hz)
70 mV (to 400 Hz)
40 mV
600 mV ac
150 mV
150 mV
—
6 V
0.3 V
0.7 V
1.7 V
60 V
3 V
7 V (
≤ 140 kHz)
4 V
600 V
30 V
70 V (
≤ 14.0 kHz)
40 V
1000 V
100 V
700 V (
≤ 1.4 kHz)
100 V
Duty Cycle Range
Accuracy
0.0 to 99.9 %
Within ± (0.2 % per kHz + 0.1 %) for risetimes < 1 µs
1
Maximum input for specified accuracy = 10X Range or 1000 V.
Frequency counter specifications
Function
Range
Resolution
Accuracy
Frequency
199.99
0.01 Hz
± (0.005 % + 1)
(0.5 Hz to 200 kHz,
1999.9
0.1 Hz
± (0.005 % + 1)
pulse width > 2 µs)
19.999 kHz
0.001 kHz
± (0.005 % + 1)
199.99 kHz
0.01 kHz
± (0.005 % + 1)
> 200 kHz
0.1 kHz
unspecified